Patent SG-11201810186T-A (SG)
Title: Flow path sensing for flow therapy apparatus
Inventor: BURGESS RUSSEL WILLIAM
IPC: A61M16/00
Filed: 2017-05-17
Abstract: p- Phase Breath Cycle Detection 512 Phase-locked Control Loop 622 Applied Phase 626 Waveform 624 Phase-shifted Applied Waveform 628 Patient 602 Blower Motor 606 Flow Sensor 608 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 23 November 2017 (23.11.2017) WIPO I PCT oimiolollm inn Holoniiiimmommom oimIE (10) International Publication Number WO 2017/200394 Al (51) International Patent Classification: A61M 16/00 (2006.01) A61B 5/087 (2006.01) (21) International Application Number: PCT/NZ2017/050063 (22) International Filing Date: 17 May 2017 (17.05.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/337,795 17 May 2016 (17.05.2016) US 62/507,013 16 May 2017 (16.05.2017) US (71) Applicant: FISHER & PAYKEL HEALTHCARE LIMITED [NZ/NZ]; 15 Maurice Paykel Place, East Tama- ki, Auckland, 2013 (NZ). (72) Inventors: BURGESS, Russel William; C/O Fisher & Paykel Healthcare Limited, 15 Maurice Paykel Place, East Tamaki, Auckland, 2013 (NZ). BARKER, Dean Antony; C/O Fisher & Paykel Healthcare Limited, 15 Mau- rice Paykel Place, East Tamaki, Auckland, 2013 (NZ). O'DONNELL, Kevin Peter; C/O Fisher & Paykel Health- care Limited, 15 Maurice Paykel Place, East Tamaki, Auck- land, 2013 (NZ). (74) Agent: BALDWINS INTELLECTUAL PROPERTY; PO Box 852, Wellington, 6011 (NZ). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, = (54) Title: FLOW PATH SENSING FOR FLOW THERAPY APPARATUS cr O O N O C FIG. 6B (57) : Systems and method for conducting respiratory therapy in a respiratory system can adjust a flow of respiratory gases to a patient based upon a detected patient breath cycle. The respiratory system can include a non-sealed patient interface. The respiratory system can be configured to deliver a high flow therapy. A patient breath cycle may be determined using one or more measured parameters, such as a flow rate, a blower motor speed, and/or a system pressure. A flow source may be adjusted to have a phase matching that of the patient's breath cycle, such that flow in increased in response to the patient inhaling, and decreased in response to the patient exhaling. [Continued on next page] WO 2017/200394 Al MIDEDIMOMOIDEIROIDEM0010101111001MOHMEMOIMIE SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h))